Question

A snake can be distinguished from a lizard by the absence of limbs and
A. Girdles
B. Tympanum
C. Girdles and tympanum
D. Girdles, tympanum and movable eyelids

Answer 1

Snakes and reptiles have a place with a similar reptilian request yet they have numerous distinctions. The primary contrast that can be seen is that reptiles have legs and snakes don't have legs. While reptiles proceed onward four appendages, a snake moves by undulating its body and furthermore with the assistance of its ventral scales. The ventral scales give the snakes a decent grasp on a superficial level.

Complete answer:
-Reptiles can hear sounds through their outside ear openings. Then again, winds just hear through the skull bone. Another component of the reptile is that it sheds its tail when fomented or in the midst of peril. Shedding the tail is supposed to be a getaway instrument. The tail develops once more. Snakes shed their skin, and most snakes shed their skin once per year.
-In contrast to reptiles, snakes have more adaptable jaws. As the jaws are truly adaptable, the snakes eat prey bigger than their own size.
-Tympanum is the term utilized for the eardrum which is available in the outer ear to get sound waves from the climate. Snakes don't have outer ears yet interior ears are available.
-Supports are the bone present in vertebrates. The arrangement of bones in the attached skeleton which associates with the arm on each side contains shoulder support or pectoral support.
-While a reptile accompanies two lungs, a snake has just a single lung that works. The correct lung is the working lung. Possibly they have no lungs on the left side or may have a contracted lung which does not capacity anymore. These left lungs are called minimal lungs.

Hence, the correct answer is option (D).

Note: The snakes, which have no outer ears, hear just through vibrations starting from the earliest stage. While the eyes of a reptile wink, snakes have "unwinking" eyes. Reptiles have two portable eyelids, and a straightforward scale is the thing that covers the eye of a snake. While reptiles can close their eyes, snakes can't close their eyes.